406 R. I. POCOCK 



that is a little less than a diameter. Antennae much longer than 

 the head, extending ever the third somite. Collum smooth above, 

 considerably narrowed at the sides where it is thickly striate ; 

 the anterior angle produced into a rounded smooth prominence, 

 the posterior angle rectangular , the border above it being 

 slightly emarginate. On the rest of the somites the transverse 

 sulcus is well marked, the area in front of it being transversely 

 striate, and that behind it smooth above, but densely striate as 

 high as the pore at the sides. Ventilai grooves short. Sterna 

 smooth. Anal tergile not quite covering the summit of the valves, 

 its posterior border being merely slightly produced and rounded, 

 the valves with their margins thickened and lightly compressed ; 

 sternite evenly convex, marked oft' from the tergite by a sulcus. 

 Legs with a single seta on the lower surface of each segment; 

 the penultimate segment padded (c/). The anterior lamina of 

 the copulators feet divided below into two processes, an inter- 

 nal short subquadrate and an external long, strongly curved, 

 internally expanded at its distal end where it is bifid ; the 

 protrusible portion terminating in two sclerites, a short straight 

 pointed cylindrical one and a longer strongly curled one. 



No. of somites 76. 



Length about 150 mm. ; width 9.5. 



A single (/ example from Bia-po (Sig. L. Fea). Differs from 

 all the preceding in the absence of any caudal process, the 

 form of the copulatory feet etc. 



